[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   18.201486] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   22.638238] random: sshd: uninitialized urandom read (32 bytes read)
[   22.807802] random: sshd: uninitialized urandom read (32 bytes read)
[   23.644251] random: sshd: uninitialized urandom read (32 bytes read)
[   23.791991] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts.
[   29.242231] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/15 21:46:30 parsed 1 programs
[   30.841405] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/15 21:46:32 executed programs: 0
[   32.055577] IPVS: ftp: loaded support on port[0] = 21
[   32.172881] WARNING: CPU: 0 PID: 4550 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0
[   32.181344] Kernel panic - not syncing: panic_on_warn set ...
[   32.181344] 
[   32.188742] CPU: 0 PID: 4550 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #51
[   32.195939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.205311] Call Trace:
[   32.207891]  dump_stack+0x1c9/0x2b4
[   32.211504]  ? dump_stack_print_info.cold.2+0x52/0x52
[   32.216695]  panic+0x238/0x4e7
[   32.219873]  ? add_taint.cold.5+0x16/0x16
[   32.224009]  ? __warn.cold.8+0x148/0x1ba
[   32.228069]  ? __warn.cold.8+0x117/0x1ba
[   32.232115]  ? smc_unhash_sk+0x357/0x4b0
[   32.236170]  __warn.cold.8+0x163/0x1ba
[   32.240052]  ? smc_unhash_sk+0x357/0x4b0
[   32.244106]  report_bug+0x252/0x2d0
[   32.247726]  do_error_trap+0x1fc/0x4d0
[   32.251605]  ? graph_lock+0x170/0x170
[   32.255397]  ? math_error+0x3e0/0x3e0
[   32.259184]  ? lock_acquire+0x1e4/0x540
[   32.263142]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.267971]  do_invalid_op+0x1b/0x20
[   32.271677]  invalid_op+0x14/0x20
[   32.275117] RIP: 0010:smc_unhash_sk+0x357/0x4b0
[   32.279768] Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 88 00 00 00 48 81 c4 c0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 89 42 1a fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 73 21 58 fa 
[   32.298938] RSP: 0018:ffff8801d8abf9f8 EFLAGS: 00010293
[   32.304288] RAX: ffff8801d8946540 RBX: ffff8801ac6650c0 RCX: ffffffff8761c7f6
[   32.311544] RDX: 0000000000000000 RSI: ffffffff8761c8b7 RDI: 0000000000000005
[   32.318795] RBP: ffff8801d8abfae0 R08: ffff8801d8946540 R09: ffffed00358cca28
[   32.326049] R10: ffffed00358cca28 R11: ffff8801ac665143 R12: 1ffff1003b157f43
[   32.333300] R13: ffff8801d8abfab8 R14: ffffffff899373c0 R15: ffff8801ac665140
[   32.340570]  ? smc_unhash_sk+0x296/0x4b0
[   32.344617]  ? smc_unhash_sk+0x357/0x4b0
[   32.348661]  ? smc_unhash_sk+0x357/0x4b0
[   32.352705]  ? smc_rx_data_available+0x120/0x120
[   32.357445]  ? release_sock+0x1ec/0x2c0
[   32.361414]  ? __local_bh_enable_ip+0x161/0x230
[   32.366070]  ? __release_sock+0x3a0/0x3a0
[   32.370214]  ? smc_release+0x2c9/0x670
[   32.374089]  ? trace_hardirqs_on+0xd/0x10
[   32.378222]  ? __local_bh_enable_ip+0x161/0x230
[   32.382876]  smc_release+0x3cf/0x670
[   32.386577]  __sock_release+0xd7/0x260
[   32.390455]  ? __sock_release+0x260/0x260
[   32.394583]  sock_close+0x19/0x20
[   32.398026]  __fput+0x355/0x8b0
[   32.401295]  ? fput+0x1a0/0x1a0
[   32.404557]  ? _raw_spin_unlock_irq+0x27/0x70
[   32.409045]  ____fput+0x15/0x20
[   32.412316]  task_work_run+0x1ec/0x2a0
[   32.416186]  ? task_work_cancel+0x250/0x250
[   32.420502]  ? exit_to_usermode_loop+0x8c/0x370
[   32.425154]  exit_to_usermode_loop+0x313/0x370
[   32.429717]  ? syscall_slow_exit_work+0x500/0x500
[   32.434549]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   32.440091]  do_fast_syscall_32+0xcd5/0xfb2
[   32.444405]  ? do_int80_syscall_32+0x890/0x890
[   32.448980]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   32.453723]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   32.459355]  ? syscall_return_slowpath+0x31d/0x5e0
[   32.464267]  ? sysret32_from_system_call+0x5/0x46
[   32.469093]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.473923]  entry_SYSENTER_compat+0x70/0x7f
[   32.478318] RIP: 0023:0xf7f8ecb9
[   32.481747] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
[   32.501188] RSP: 002b:00000000ffd14c4c EFLAGS: 00000246 ORIG_RAX: 0000000000000006
[   32.508899] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000008150138
[   32.516156] RDX: 0000000000000004 RSI: 0000000000000001 RDI: 00000000ffd15308
[   32.523409] RBP: 00000000000003c0 R08: 0000000000000000 R09: 0000000000000000
[   32.530668] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   32.537916] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   32.545804] Dumping ftrace buffer:
[   32.550033]    (ftrace buffer empty)
[   32.553727] Kernel Offset: disabled
[   32.557333] Rebooting in 86400 seconds..